HOWTO Fix A Buggy DSDT File

[MartinoM]

Can someone help me? I have Acer Aspire 7720g

Intel ACPI Component Architecture
ASL Optimizing Compiler version 20090521 [Jun 30 2009]
Copyright (C) 2000 - 2009 Intel Corporation
Supports ACPI Specification Revision 3.0a

dsdt.dsl  6842:                    Method (_GTM, 0, NotSerialized)
Warning  1087 -                               ^ Not all control paths return a value (_GTM)

dsdt.dsl  6842:                    Method (_GTM, 0, NotSerialized)
Warning  1080 -                               ^ Reserved method must return a value (_GTM)

dsdt.dsl  7004:                         Method (_GTF, 0, NotSerialized)
Warning  1087 -                                    ^ Not all control paths return a value (_GTF)

dsdt.dsl  7004:                         Method (_GTF, 0, NotSerialized)
Warning  1080 -                                    ^ Reserved method must return a value (_GTF)

dsdt.dsl  7072:                         Method (_GTF, 0, NotSerialized)
Warning  1087 -                                    ^ Not all control paths return a value (_GTF)

dsdt.dsl  7072:                         Method (_GTF, 0, NotSerialized)
Warning  1080 -                                    ^ Reserved method must return a value (_GTF)

dsdt.dsl  7145:                     Method (_GTM, 0, NotSerialized)
Warning  1087 -                                ^ Not all control paths return a value (_GTM)

dsdt.dsl  7145:                     Method (_GTM, 0, NotSerialized)
Warning  1080 -                                ^ Reserved method must return a value (_GTM)

dsdt.dsl  7319:                         Method (_GTF, 0, NotSerialized)
Warning  1087 -                                    ^ Not all control paths return a value (_GTF)

dsdt.dsl  7319:                         Method (_GTF, 0, NotSerialized)
Warning  1080 -                                    ^ Reserved method must return a value (_GTF)

dsdt.dsl  7387:                         Method (_GTF, 0, NotSerialized)
Warning  1087 -                                    ^ Not all control paths return a value (_GTF)

dsdt.dsl  7387:                         Method (_GTF, 0, NotSerialized)
Warning  1080 -                                    ^ Reserved method must return a value (_GTF)

dsdt.dsl  7494:                     Method (_GTF, 0, NotSerialized)
Warning  1087 -                                ^ Not all control paths return a value (_GTF)

dsdt.dsl  7494:                     Method (_GTF, 0, NotSerialized)
Warning  1080 -                                ^ Reserved method must return a value (_GTF)

dsdt.dsl  7540:                     Method (_GTF, 0, NotSerialized)
Warning  1087 -                                ^ Not all control paths return a value (_GTF)

dsdt.dsl  7540:                     Method (_GTF, 0, NotSerialized)
Warning  1080 -                                ^ Reserved method must return a value (_GTF)

dsdt.dsl  7851:                     Name (_T_0, Zero)
Remark   5110 -                              ^ Use of compiler reserved name (_T_0)

dsdt.dsl  7914:                     Name (_T_0, Zero)
Remark   5110 -                              ^ Use of compiler reserved name (_T_0)

dsdt.dsl  7918:                         Name (_T_1, Zero)
Remark   5110 -    Use of compiler reserved name ^  (_T_1)

dsdt.dsl  7952:                         Name (_T_2, Zero)
Remark   5110 -    Use of compiler reserved name ^  (_T_2)

dsdt.dsl  7986:                 Method (OEMN, 0, NotSerialized)
Warning  1087 -                            ^ Not all control paths return a value (OEMN)

dsdt.dsl  8016:                     Name (_T_0, Zero)
Remark   5110 -                              ^ Use of compiler reserved name (_T_0)

dsdt.dsl  8196:                     Name (_T_0, Zero)
Remark   5110 -                              ^ Use of compiler reserved name (_T_0)

dsdt.dsl  8208:                             Name (_T_1, Zero)
Remark   5110 -        Use of compiler reserved name ^  (_T_1)

dsdt.dsl  8353:                         Name (_T_2, Zero)
Remark   5110 -    Use of compiler reserved name ^  (_T_2)

dsdt.dsl  8568:                     Name (_T_0, Zero)
Remark   5110 -                              ^ Use of compiler reserved name (_T_0)

dsdt.dsl  8621:                 Method (_WED, 1, NotSerialized)
Warning  1087 -                            ^ Not all control paths return a value (_WED)

dsdt.dsl  8621:                 Method (_WED, 1, NotSerialized)
Warning  1080 -                            ^ Reserved method must return a value (_WED)

dsdt.dsl  8627:                             Return (OEMN ())
Warning  1092 -                                        ^ Called method may not always return a value

dsdt.dsl  8665:                 Method (WMBD, 3, NotSerialized)
Warning  1087 -                            ^ Not all control paths return a value (WMBD)

ASL Input:  dsdt.dsl - 8837 lines, 327847 bytes, 3822 keywords
AML Output: dsdt.aml - 32998 bytes, 929 named objects, 2893 executable opcodes

Compilation complete. 0 Errors, 21 Warnings, 9 Remarks, 934 Optimizations